Map

The Diaphone Database has a total of 539 Diaphone horns at 362 known locations, in 25 different states, and 2 countries, past & present. This map currently represents 294 Diaphone locations. More coming as time permits.

Legend:

Not in place

Unk if in place

In place

Hover over marker for State and Locality. Click marker for details (if any)